Which one is not a Integer

What does the m stand for, in $$y=mx+b$$  

in a graph the slope is found by

what quadrant is (-1), (4)

Alex can run 24 miles in 3 hours. how many miles does he run on average in 1 hour

There's 24 hours in 1 day, how many hours are in $$\frac{1}{6}$$  of the day